Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/test/ui/macros/macro-deep_expansion.rs b/src/test/ui/macros/macro-deep_expansion.rs
new file mode 100644
index 000000000..e13d8e1fc
--- /dev/null
+++ b/src/test/ui/macros/macro-deep_expansion.rs
@@ -0,0 +1,17 @@
+// run-pass
+
+macro_rules! foo2 {
+    () => {
+        "foo"
+    }
+}
+
+macro_rules! foo {
+    () => {
+        foo2!()
+    }
+}
+
+fn main() {
+    assert_eq!(concat!(foo!(), "bar"), "foobar")
+}